@Article{ 
  MarZan12,
  author = { Marchese, Andrea and Zanco, Clemente },
  title = { On a question by Corson about point-finite coverings },
  journal = { Israel J. math. },
  year = { 2012 },
  pages = {  },
  URL = { http://cvgmt.sns.it/paper/4097/ },
  note = { cvgmt preprint}
}